class P :
     name = "buhao";
     age = 0
     def __init__(self , name , age):
         self.name = name
         self.age = age

p = P("hao",11)
p1 = p
p2 = p
print(p.name)
print(p.age)

del p
print(p1.__class__)
print(p1.name)
print(p1.age)
print(p1.__dict__)
print(p1.__annotations__)
print(p1.__getattribute__("name"))
print(p1.__module__)

#
set1 = set([1,32])

set1.add(1)
print(set1)